i came up witht his theory when i started smoking, it helps to actually be saying it while smoking a cigarette, but here goes.
Life is like a cigarette, it starts with the spark of life, the heat of passion (light a lighter or strike a match) then comes the first breath (light the cig) with the first breath, you are already drawing towards the end, with each breath, the length is measured, shorter, almost imperceptibly. Some people, as they work towards the end they cling to the past, holding on to it as they move farther along in life (show dangling ashes) others shed teh past regularely as they go, living for the now and the future (flick the ashes) (inhales) always inching towards the end. Some lives never make it (imply crushing out the cig without actually doing it, who wants to waste a cig) some, get left by the wayside, never coming to much (sets the cig in the ashtray letting it burn for a little bit) they become wasted lives, uneven, but some lives they go all the way to the end (take another drag), what happens then is a matter of belief, some believe in reincarnation (jump a second cigarette) others beleive that life ends, and that is all *crushes out the cigarette then picks up teh butt) but in the end, one thing is for certain (peals the paper from the filter and starts to tear the stained fibers apart) what we leave behind is what matters the most, the friends and families, the lives we have colored, the things we have done, this is how life is like a cigarette.